Name | 014733 |
Title | The missing soft X-ray luminosity in cluster cooling flows |
URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0147330101 |
DOI | https://doi.org/10.5270/esa-wln0yz5 |
Author | Prof Andrew Fabian |
Description | Recent X-ray spectra of cluster cooling flows, particularly RGS spectra, have shown that the mass cooling rate is much smaller than previously estimated, with little emission seen from gas cooling below 1 keV. The expected soft X-ray luminosity is missing. Why the inner gas is so cool (20-30 per cent of the virial temperature) yet apparently not cooling is a puzzle, which has ramifications for galaxy formation. We propose deep RGS observations of A2597, A1835 and A1795 to resolve this important problem. |
Publication | No observations found associated with the current proposal |
Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
Temporal Coverage | 2003-06-27T07:38:12Z/2003-07-30T20:05:30Z |
Version | 17.56_20190403_1200 |
Mission Description | The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations. Since Earth's atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis. |
Creator Contact | https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk |
Date Published | 2004-10-26T00:00:00Z |
Publisher And Registrant | European Space Agency |
Credit Guidelines | European Space Agency, Prof Andrew Fabian, 2004, 014733, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-wln0yz5 |